Fix Download Failed Issue: Resolve No HTTP Transports Available Error for a Seamless Request Completion

In this guide, we'll walk you through the process of resolving the 'No HTTP Transports Available' error, which can cause download failures and disrupt the seamless completion of requests. This error is typically encountered when using WordPress or other PHP applications that require HTTP transport mechanisms to fetch external data.

Table of Contents

Understanding the 'No HTTP Transports Available' Error

This error occurs when your PHP installation lacks the necessary extensions to support HTTP transport mechanisms such as cURL and fsockopen. These mechanisms enable PHP applications to communicate with external servers and fetch data.

The error message typically looks like this:

Download failed. There are no HTTP transports available which can complete the requested request.

To resolve this issue, you'll need to enable the required PHP extensions and ensure proper configuration.

Fixing the Error: Step-by-Step Guide

Step 1: Enable PHP Extension

To fix this error, you must enable the cURL extension for your PHP installation. If cURL is not available, you can also enable the fsockopen extension as an alternative.

For cURL:

  1. Locate your php.ini file. This file is usually located in the PHP installation directory (e.g., /etc/php/7.4/apache2/php.ini for Apache on Ubuntu).
  2. Open the php.ini file in a text editor.
  3. Search for the line ;extension=curl and uncomment it by removing the semicolon (;) at the beginning of the line. The line should now look like this:

For fsockopen:

  1. Locate your php.ini file.
  2. Open the php.ini file in a text editor.
  3. Search for the line ;extension=sockets and uncomment it by removing the semicolon (;) at the beginning of the line. The line should now look like this:

Step 2: Verify PHP Configuration

To ensure that the required extensions are enabled, you can create a simple PHP script to display your PHP configuration.

  1. Create a new file named phpinfo.php in your web server's document root (e.g., /var/www/html for Apache on Ubuntu).
  2. Add the following code to the phpinfo.php file:
  1. Save the file and access it through your web browser by visiting http://your_server_ip/phpinfo.php.
  2. Review the displayed configuration and verify that the cURL or sockets extension is enabled.

Step 3: Restart Web Server

After enabling the required PHP extensions, you must restart your web server to apply the changes.

For Apache:

sudo service apache2 restart

For Nginx:

sudo service nginx restart


1. How do I find the location of my php.ini file?

You can find the location of your php.ini file by creating a phpinfo.php file as described in Step 2 and searching for "Loaded Configuration File" in the displayed PHP configuration.

2. Can I enable both cURL and fsockopen extensions?

Yes, you can enable both extensions to provide multiple HTTP transport mechanisms for your PHP applications.

3. How do I know if my web server supports the necessary PHP extensions?

You can check your web server's PHP configuration by following the steps in Step 2.

4. What should I do if the error persists after enabling the required PHP extensions?

If the error persists, you should contact your web hosting provider or server administrator for assistance.

5. Are there any alternative solutions to resolve the 'No HTTP Transports Available' error?

If enabling the cURL and sockets extensions does not resolve the issue, you might consider using a different PHP library or API that does not rely on these extensions.

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